This is a lesson I did on road signs.

First we talked about the difference between "You may" and "You must", then went on to "You must not" and "no..."

Then I showed them about 20 signs and they guessed the meaning, and then made a sentence (No pets, You may camp here, You must stop, You must not touch this)

Then I gave them all bingo cards, and we played Bingo for about 15 minutes. The kids loved it. Since I was just picking out and reading the names of signs, I decided to take a short video of the class. This is my actual classroom, though I only teach here about half the time.